package/libjwt: add CPE variables

cpe:2.3:a:bencollins:jwt_c_library is a valid CPE identifier for this
package:

  https://nvd.nist.gov/products/cpe/detail/6335E595-6F38-4837-83BB-C78B687BB75B

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libjwt/libjwt.mk

@@ -11,6 +11,8 @@ LIBJWT_AUTORECONF = YES
 LIBJWT_INSTALL_STAGING = YES
 LIBJWT_LICENSE = MPL-2.0
 LIBJWT_LICENSE_FILES = LICENSE
+LIBJWT_CPE_ID_VENDOR = bencollins
+LIBJWT_CPE_ID_PRODUCT = jwt_c_library
 LIBJWT_CONF_OPTS = --without-examples
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)